{"name":"com.gradientdecisions/merchant-check","slug":"gradientdecisions-merchant-check","title":"x402 Merchant Check","description":"Pre-payment merchant trust checks for x402 agents on Base and Solana.","url":"https://mcp.market/server/gradientdecisions-merchant-check","rating":null,"grade":"A","score":87,"certified":false,"status":"active","category":"finance","tags":["finance"],"presence":{"score":15,"stars":0,"forks":0,"downloads_week":null,"last_push_at":"2026-09-21T20:21:44.000Z","license":null},"uptime":{"percent":100,"checks":28,"ok":28,"last_checked_at":"2026-11-04T12:46:08.278Z","last_ok_at":"2026-11-04T12:46:08.278Z","latency_ms":384},"claimed":false,"transport":"remote","callable_via_gateway":true,"default_price_micros":0,"repository":"https://github.com/clevbot/merchant-check-mcp-","website":null,"version":"1.0.0","remotes":[{"type":"streamable-http","url":"https://mcp.gradientdecisions.com/mcp"}],"packages":[],"tools":[{"name":"check_merchant","description":"Before paying an unfamiliar merchant via x402, including one just discovered through a marketplace like Coinbase's x402 Bazaar, call this for a machine-readable assessment of their observable on-chain payment behavior, on Base or Solana. Returns a `recommendation` (PROCEED / CAUTION / INSUFFICIENT_SIGNAL) a payment policy can branch on directly, plus supporting evidence: trust tier, confidence, payer diversity, transaction history, category (data_api/compute/content_generation/financial_data/storage/other), known platform URL(s), and the merchant's own advertised price(s) compared against category peers, with no caller-supplied price required for that. This is decision support drawn from observed behavior, not a certification. PROCEED means the available evidence doesn't show cause for concern, not a guarantee of safety. INSUFFICIENT_SIGNAL means there isn't enough history to say either way, distinct from an actual concern. Add a specific quoted price to also check that exact figure against comparable sellers. $0.01 USDC per check, paid via x402.","write_action":false,"price_micros":0,"input_schema":{"type":"object","properties":{"merchant_wallet_address":{"type":"string","description":"Merchant's receiving wallet address: a Base (0x...) or Solana (base58) address. Usually extractable directly from a 402 Payment Required response's accepts[].payTo."},"price":{"type":"number","description":"Quoted price in USD-equivalent, if checking fairness"},"network":{"type":"string","description":"Optional. CAIP-2 network id from the 402 response's accepts[].network (e.g. \"eip155:8453\"), if already on hand. Not required to score."},"asset":{"type":"string","description":"Optional. Payment asset/token from the 402 response's accepts[].asset. Not required to score."},"amount":{"type":"string","description":"Optional. Atomic payment amount from the 402 response's accepts[].amount, if preferred over `price`. Not required to score."},"service_url":{"type":"string","description":"Optional. The resource/service URL the agent was trying to reach. Not required to score."},"resource_type":{"type":"string","description":"Deprecated, accepted but unused. Price-fairness now compares against the merchant's own on-chain-derived category automatically, no need to supply this."}},"required":["merchant_wallet_address"],"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"}}],"scan":{"score":87,"grade":"A","scanned_at":"2026-11-02T21:54:12.394Z","report":{"scannerVersion":"0.1.10","scannedAt":"2026-11-02T21:54:12.334Z","components":{"code":{"score":-1,"max":25,"notes":["remote-only server, no package to scan"]},"reliability":{"score":20,"max":20,"notes":["remote reachable in 1522ms"]},"poisoning":{"score":15,"max":15,"notes":["1 tool descriptions checked"]},"auth":{"score":10,"max":15,"notes":["open endpoint, read-only tools"]},"maintenance":{"score":12,"max":15,"notes":["last push 42 days ago"]},"identity":{"score":8,"max":10,"notes":["endpoint served from the registry-verified namespace domain"]}},"findings":[],"inputs":{"probes":[{"url":"https://mcp.gradientdecisions.com/mcp","reachable":true,"authRequired":false,"latencyMs":1522,"serverInfo":{"name":"merchant-check-mcp","version":"0.1.0"}}],"packages":[],"repo":{"found":true,"owner":"clevbot","repo":"merchant-check-mcp-","archived":false,"pushedAt":"2026-09-21T20:21:44Z","stars":0,"forks":0,"openIssues":1,"ownerType":"User","ownerAvatarUrl":"https://avatars.githubusercontent.com/u/75707744?v=4","ownerCreatedAt":"2020-12-09T01:21:54Z"},"icon":{"url":null,"source":"none"},"presence":{"stars":0,"forks":0,"downloadsWeek":null,"license":null,"lastPushAt":"2026-09-21T20:21:44.000Z","score":15}}}},"grade_history":[],"reviews":[]}